Portable impact wrench



FIG. 1 is a front elevational view of a portable impact wrench showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view of thereof

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a reference right side elevational view showing a example of use.

The broken lines in FIG. 7 showing a detachable element are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a portable impact wrench, as shown and described. 